Hae Weon Lee is currently working on solid oxide fuel cells at as a principal research scientist at KIST and served as a delegate for the International Partnership for Hydrogen and Fuel Cells in the Economy on behalf of the Korea Energy Agency. He joined KIST as a senior research scientist in 1992 and served as the Head of the Center for Energy Materials Research at KIST from 2007 to 2010. He was also the Program Director of Fuel Cells at the Korea Institute of Energy Technology Evaluation and Planning from 2013 to 2015.